Sub panel install - redundant breaker?
#1
Member
Thread Starter
Sub panel install - redundant breaker?
If both my panels have a 100A main breaker, do I really need another 100A breaker in the main panel to feed the subpanel or can I connect directly to the panel somehow?
The main panel does not have any other breakers in it, all of them are in the sub panel....
Thanks a
gain!
The main panel does not have any other breakers in it, all of them are in the sub panel....
Thanks a
gain!
Top Answer
11-22-20, 01:51 PM
Member
Join Date: Feb 2016
Location: United States, Virginia
Posts: 1,704
Received 273 Upvotes
on
230 Posts
#3
The only way to connect the wires to the main panel is with feed-through lugs as Pattenp mentioned, or from a breaker. You may not put two wires under a single lug.
If the sub-panel is in the same building it does not require a main breaker, you may use an MLO (Main Lug Only) panel.
If the sub-panel is in the same building it does not require a main breaker, you may use an MLO (Main Lug Only) panel.
C-COOP
voted this post useful.
#4
Member
Thread Starter
So there does seem to be some feed-through lugs on this old panel. It looks like the garage subpanel is already attached to them. Can I also put another subpanel on to the same lugs together with the garage panel feed?
I have attached a picture of both lugs - one above the breakers and one below the breakers....
I have attached a picture of both lugs - one above the breakers and one below the breakers....
#5
Can I also put another subpanel on to the same lugs together with the garage panel feed?
If you post a picture of the entire panel we can make suggestions to properly wire your panel.
#6
Member
Thread Starter
Hmmm... well it has been like that since the 60's I am guessing. The feed wire from the breaker is much heavier gauge than what goes to the garage (my pics aren't that good....
#7
Your main panel.....is that a Federal Pacific or Federal Pioneer panel? I believe it is so my suggestion is to replace it with a larger panel that does have feed-thru lugs. I think I would replace it with a Square D QO panel.